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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: CliSession.html 939 2015-05-29 01:16:17Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.cli;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.io.PrintWriter;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.lang.reflect.InvocationTargetException;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.SortedMap;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.util.TreeMap;<a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.JSimpleDB;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.Session;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.jsimpledb.cli.cmd.AbstractCommand;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.jsimpledb.cli.cmd.CompareSchemasCommand;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.jsimpledb.cli.cmd.DeleteSchemaVersionCommand;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.jsimpledb.cli.cmd.EvalCommand;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import org.jsimpledb.cli.cmd.HelpCommand;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.jsimpledb.cli.cmd.ImportCommand;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.jsimpledb.cli.cmd.InfoCommand;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.jsimpledb.cli.cmd.LoadCommand;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.jsimpledb.cli.cmd.QuitCommand;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.jsimpledb.cli.cmd.RaftAddCommand;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.jsimpledb.cli.cmd.RaftRemoveCommand;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.jsimpledb.cli.cmd.SaveCommand;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.jsimpledb.cli.cmd.SetAllowNewSchemaCommand;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.jsimpledb.cli.cmd.SetSchemaVersionCommand;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.jsimpledb.cli.cmd.SetValidationModeCommand;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.jsimpledb.cli.cmd.ShowAllSchemasCommand;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.jsimpledb.cli.cmd.ShowSchemaCommand;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.jsimpledb.cli.func.DumpFunction;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.jsimpledb.cli.func.PrintFunction;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.jsimpledb.core.Database;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.jsimpledb.core.Transaction;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.jsimpledb.parse.ParseException;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.jsimpledb.parse.ParseSession;<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>/**<a name="line.41"></a>
<span class="sourceLineNo">042</span> * Represents one CLI console session.<a name="line.42"></a>
<span class="sourceLineNo">043</span> */<a name="line.43"></a>
<span class="sourceLineNo">044</span>public class CliSession extends ParseSession {<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span>    private final PrintWriter writer;<a name="line.46"></a>
<span class="sourceLineNo">047</span>    private final TreeMap&lt;String, AbstractCommand&gt; commands = new TreeMap&lt;&gt;();<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>    private boolean done;<a name="line.49"></a>
<span class="sourceLineNo">050</span>    private boolean verbose;<a name="line.50"></a>
<span class="sourceLineNo">051</span>    private int lineLimit = 16;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>// Constructors<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * Constructor for core level access only.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     *<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * @param db core database<a name="line.58"></a>
<span class="sourceLineNo">059</span>     * @param writer console output<a name="line.59"></a>
<span class="sourceLineNo">060</span>     * @throws IllegalArgumentException if either parameter is null<a name="line.60"></a>
<span class="sourceLineNo">061</span>     */<a name="line.61"></a>
<span class="sourceLineNo">062</span>    public CliSession(Database db, PrintWriter writer) {<a name="line.62"></a>
<span class="sourceLineNo">063</span>        super(db);<a name="line.63"></a>
<span class="sourceLineNo">064</span>        if (writer == null)<a name="line.64"></a>
<span class="sourceLineNo">065</span>            throw new IllegalArgumentException("null writer");<a name="line.65"></a>
<span class="sourceLineNo">066</span>        this.writer = writer;<a name="line.66"></a>
<span class="sourceLineNo">067</span>    }<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>    /**<a name="line.69"></a>
<span class="sourceLineNo">070</span>     * Constructor for {@link JSimpleDB} level access.<a name="line.70"></a>
<span class="sourceLineNo">071</span>     *<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * @param jdb database<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * @param writer console output<a name="line.73"></a>
<span class="sourceLineNo">074</span>     * @throws IllegalArgumentException if either parameter is null<a name="line.74"></a>
<span class="sourceLineNo">075</span>     */<a name="line.75"></a>
<span class="sourceLineNo">076</span>    public CliSession(JSimpleDB jdb, PrintWriter writer) {<a name="line.76"></a>
<span class="sourceLineNo">077</span>        super(jdb);<a name="line.77"></a>
<span class="sourceLineNo">078</span>        if (writer == null)<a name="line.78"></a>
<span class="sourceLineNo">079</span>            throw new IllegalArgumentException("null writer");<a name="line.79"></a>
<span class="sourceLineNo">080</span>        this.writer = writer;<a name="line.80"></a>
<span class="sourceLineNo">081</span>    }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>// Accessors<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>    /**<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * Get the output {@link PrintWriter} for this CLI session.<a name="line.86"></a>
<span class="sourceLineNo">087</span>     *<a name="line.87"></a>
<span class="sourceLineNo">088</span>     * @return output writer<a name="line.88"></a>
<span class="sourceLineNo">089</span>     */<a name="line.89"></a>
<span class="sourceLineNo">090</span>    public PrintWriter getWriter() {<a name="line.90"></a>
<span class="sourceLineNo">091</span>        return this.writer;<a name="line.91"></a>
<span class="sourceLineNo">092</span>    }<a name="line.92"></a>
<span class="sourceLineNo">093</span><a name="line.93"></a>
<span class="sourceLineNo">094</span>    /**<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * Get the {@link AbstractCommand}s registered with this instance.<a name="line.95"></a>
<span class="sourceLineNo">096</span>     *<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * @return registered commands indexed by name<a name="line.97"></a>
<span class="sourceLineNo">098</span>     */<a name="line.98"></a>
<span class="sourceLineNo">099</span>    public SortedMap&lt;String, AbstractCommand&gt; getCommands() {<a name="line.99"></a>
<span class="sourceLineNo">100</span>        return this.commands;<a name="line.100"></a>
<span class="sourceLineNo">101</span>    }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span>    public int getLineLimit() {<a name="line.103"></a>
<span class="sourceLineNo">104</span>        return this.lineLimit;<a name="line.104"></a>
<span class="sourceLineNo">105</span>    }<a name="line.105"></a>
<span class="sourceLineNo">106</span>    public void setLineLimit(int lineLimit) {<a name="line.106"></a>
<span class="sourceLineNo">107</span>        this.lineLimit = lineLimit;<a name="line.107"></a>
<span class="sourceLineNo">108</span>    }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>    public boolean isVerbose() {<a name="line.110"></a>
<span class="sourceLineNo">111</span>        return this.verbose;<a name="line.111"></a>
<span class="sourceLineNo">112</span>    }<a name="line.112"></a>
<span class="sourceLineNo">113</span>    public void setVerbose(boolean verbose) {<a name="line.113"></a>
<span class="sourceLineNo">114</span>        this.verbose = verbose;<a name="line.114"></a>
<span class="sourceLineNo">115</span>    }<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span>    public boolean isDone() {<a name="line.117"></a>
<span class="sourceLineNo">118</span>        return this.done;<a name="line.118"></a>
<span class="sourceLineNo">119</span>    }<a name="line.119"></a>
<span class="sourceLineNo">120</span>    public void setDone(boolean done) {<a name="line.120"></a>
<span class="sourceLineNo">121</span>        this.done = done;<a name="line.121"></a>
<span class="sourceLineNo">122</span>    }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span>// Command registration<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span>    /**<a name="line.126"></a>
<span class="sourceLineNo">127</span>     * Register the standard CLI built-in functions such as {@code print()}, {@code dump()}, etc.<a name="line.127"></a>
<span class="sourceLineNo">128</span>     */<a name="line.128"></a>
<span class="sourceLineNo">129</span>    @Override<a name="line.129"></a>
<span class="sourceLineNo">130</span>    public void registerStandardFunctions() {<a name="line.130"></a>
<span class="sourceLineNo">131</span>        super.registerStandardFunctions();<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span>        // We don't use AnnotatedClassScanner here to avoid having a dependency on the spring classes<a name="line.133"></a>
<span class="sourceLineNo">134</span>        this.registerFunction(DumpFunction.class);<a name="line.134"></a>
<span class="sourceLineNo">135</span>        this.registerFunction(PrintFunction.class);<a name="line.135"></a>
<span class="sourceLineNo">136</span>    }<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span>    /**<a name="line.138"></a>
<span class="sourceLineNo">139</span>     * Register the standard CLI built-in commands.<a name="line.139"></a>
<span class="sourceLineNo">140</span>     */<a name="line.140"></a>
<span class="sourceLineNo">141</span>    public void registerStandardCommands() {<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span>        // We don't use AnnotatedClassScanner here to avoid having a dependency on the spring classes<a name="line.143"></a>
<span class="sourceLineNo">144</span>        this.registerCommand(CompareSchemasCommand.class);<a name="line.144"></a>
<span class="sourceLineNo">145</span>        this.registerCommand(DeleteSchemaVersionCommand.class);<a name="line.145"></a>
<span class="sourceLineNo">146</span>        this.registerCommand(EvalCommand.class);<a name="line.146"></a>
<span class="sourceLineNo">147</span>        this.registerCommand(HelpCommand.class);<a name="line.147"></a>
<span class="sourceLineNo">148</span>        this.registerCommand(ImportCommand.class);<a name="line.148"></a>
<span class="sourceLineNo">149</span>        this.registerCommand(InfoCommand.class);<a name="line.149"></a>
<span class="sourceLineNo">150</span>        this.registerCommand(LoadCommand.class);<a name="line.150"></a>
<span class="sourceLineNo">151</span>        this.registerCommand(QuitCommand.class);<a name="line.151"></a>
<span class="sourceLineNo">152</span>        this.registerCommand(RaftAddCommand.class);<a name="line.152"></a>
<span class="sourceLineNo">153</span>        this.registerCommand(RaftRemoveCommand.class);<a name="line.153"></a>
<span class="sourceLineNo">154</span>        this.registerCommand(SaveCommand.class);<a name="line.154"></a>
<span class="sourceLineNo">155</span>        this.registerCommand(SetAllowNewSchemaCommand.class);<a name="line.155"></a>
<span class="sourceLineNo">156</span>        this.registerCommand(SetSchemaVersionCommand.class);<a name="line.156"></a>
<span class="sourceLineNo">157</span>        this.registerCommand(SetValidationModeCommand.class);<a name="line.157"></a>
<span class="sourceLineNo">158</span>        this.registerCommand(ShowAllSchemasCommand.class);<a name="line.158"></a>
<span class="sourceLineNo">159</span>        this.registerCommand(ShowSchemaCommand.class);<a name="line.159"></a>
<span class="sourceLineNo">160</span>    }<a name="line.160"></a>
<span class="sourceLineNo">161</span><a name="line.161"></a>
<span class="sourceLineNo">162</span>    /**<a name="line.162"></a>
<span class="sourceLineNo">163</span>     * Create an instance of the specified class and register it as a {@link AbstractCommand}.<a name="line.163"></a>
<span class="sourceLineNo">164</span>     * The class must have a public constructor taking either a single {@link CliSession} parameter<a name="line.164"></a>
<span class="sourceLineNo">165</span>     * or no parameters; they will be tried in that order.<a name="line.165"></a>
<span class="sourceLineNo">166</span>     *<a name="line.166"></a>
<span class="sourceLineNo">167</span>     * @param cl command class<a name="line.167"></a>
<span class="sourceLineNo">168</span>     * @throws IllegalArgumentException if {@code cl} has no suitable constructor<a name="line.168"></a>
<span class="sourceLineNo">169</span>     * @throws IllegalArgumentException if {@code cl} instantiation fails<a name="line.169"></a>
<span class="sourceLineNo">170</span>     * @throws IllegalArgumentException if {@code cl} does not subclass {@link AbstractCommand}<a name="line.170"></a>
<span class="sourceLineNo">171</span>     */<a name="line.171"></a>
<span class="sourceLineNo">172</span>    public void registerCommand(Class&lt;?&gt; cl) {<a name="line.172"></a>
<span class="sourceLineNo">173</span>        if (!AbstractCommand.class.isAssignableFrom(cl))<a name="line.173"></a>
<span class="sourceLineNo">174</span>            throw new IllegalArgumentException(cl + " does not subclass " + AbstractCommand.class.getName());<a name="line.174"></a>
<span class="sourceLineNo">175</span>        final AbstractCommand command = this.instantiate(cl.asSubclass(AbstractCommand.class));<a name="line.175"></a>
<span class="sourceLineNo">176</span>        this.commands.put(command.getName(), command);<a name="line.176"></a>
<span class="sourceLineNo">177</span>    }<a name="line.177"></a>
<span class="sourceLineNo">178</span><a name="line.178"></a>
<span class="sourceLineNo">179</span>    private &lt;T&gt; T instantiate(Class&lt;T&gt; cl) {<a name="line.179"></a>
<span class="sourceLineNo">180</span>        Throwable failure;<a name="line.180"></a>
<span class="sourceLineNo">181</span>        try {<a name="line.181"></a>
<span class="sourceLineNo">182</span>            return cl.getConstructor(CliSession.class).newInstance(this);<a name="line.182"></a>
<span class="sourceLineNo">183</span>        } catch (NoSuchMethodException e) {<a name="line.183"></a>
<span class="sourceLineNo">184</span>            try {<a name="line.184"></a>
<span class="sourceLineNo">185</span>                return cl.getConstructor().newInstance();<a name="line.185"></a>
<span class="sourceLineNo">186</span>            } catch (NoSuchMethodException e2) {<a name="line.186"></a>
<span class="sourceLineNo">187</span>                throw new IllegalArgumentException("no suitable constructor found in class " + cl.getName());<a name="line.187"></a>
<span class="sourceLineNo">188</span>            } catch (Exception e2) {<a name="line.188"></a>
<span class="sourceLineNo">189</span>                failure = e2;<a name="line.189"></a>
<span class="sourceLineNo">190</span>            }<a name="line.190"></a>
<span class="sourceLineNo">191</span>        } catch (Exception e) {<a name="line.191"></a>
<span class="sourceLineNo">192</span>            failure = e;<a name="line.192"></a>
<span class="sourceLineNo">193</span>        }<a name="line.193"></a>
<span class="sourceLineNo">194</span>        if (failure instanceof InvocationTargetException)<a name="line.194"></a>
<span class="sourceLineNo">195</span>            failure = failure.getCause();<a name="line.195"></a>
<span class="sourceLineNo">196</span>        throw new IllegalArgumentException("unable to instantiate class " + cl.getName() + ": " + failure, failure);<a name="line.196"></a>
<span class="sourceLineNo">197</span>    }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span>// Errors<a name="line.199"></a>
<span class="sourceLineNo">200</span><a name="line.200"></a>
<span class="sourceLineNo">201</span>    @Override<a name="line.201"></a>
<span class="sourceLineNo">202</span>    protected void reportException(Exception e) {<a name="line.202"></a>
<span class="sourceLineNo">203</span>        final String message = e.getLocalizedMessage();<a name="line.203"></a>
<span class="sourceLineNo">204</span>        if (e instanceof ParseException &amp;&amp; message != null)<a name="line.204"></a>
<span class="sourceLineNo">205</span>            this.writer.println("Error: " + message);<a name="line.205"></a>
<span class="sourceLineNo">206</span>        else<a name="line.206"></a>
<span class="sourceLineNo">207</span>            this.writer.println("Error: " + e.getClass().getSimpleName() + (message != null ? ": " + message : ""));<a name="line.207"></a>
<span class="sourceLineNo">208</span>        if (this.verbose || this.showStackTrace(e))<a name="line.208"></a>
<span class="sourceLineNo">209</span>            e.printStackTrace(this.writer);<a name="line.209"></a>
<span class="sourceLineNo">210</span>    }<a name="line.210"></a>
<span class="sourceLineNo">211</span><a name="line.211"></a>
<span class="sourceLineNo">212</span>    protected boolean showStackTrace(Exception e) {<a name="line.212"></a>
<span class="sourceLineNo">213</span>        return e instanceof NullPointerException || (e instanceof ParseException &amp;&amp; e.getLocalizedMessage() == null);<a name="line.213"></a>
<span class="sourceLineNo">214</span>    }<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span>// Action<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span>    /**<a name="line.218"></a>
<span class="sourceLineNo">219</span>     * Perform the given action. This is a convenience method, equivalent to: {@code perform(null, action)}<a name="line.219"></a>
<span class="sourceLineNo">220</span>     *<a name="line.220"></a>
<span class="sourceLineNo">221</span>     * @param action action to perform<a name="line.221"></a>
<span class="sourceLineNo">222</span>     * @return true if {@code action} completed successfully, false if the transaction could not be created<a name="line.222"></a>
<span class="sourceLineNo">223</span>     *  or {@code action} threw an exception<a name="line.223"></a>
<span class="sourceLineNo">224</span>     * @throws IllegalArgumentException if {@code action} is null<a name="line.224"></a>
<span class="sourceLineNo">225</span>     */<a name="line.225"></a>
<span class="sourceLineNo">226</span>    public boolean perform(Action action) {<a name="line.226"></a>
<span class="sourceLineNo">227</span>        return this.perform(null, action);<a name="line.227"></a>
<span class="sourceLineNo">228</span>    }<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span>    /**<a name="line.230"></a>
<span class="sourceLineNo">231</span>     * Perform the given action within the given existing transaction, if any, otherwise within a new transaction.<a name="line.231"></a>
<span class="sourceLineNo">232</span>     * If {@code tx} is not null, it will used and left open when this method returns. Otherwise,<a name="line.232"></a>
<span class="sourceLineNo">233</span>     * if there is already an open transaction associated with this instance, it will be used;<a name="line.233"></a>
<span class="sourceLineNo">234</span>     * otherwise, a new transaction is created for the duration of {@code action} and then committed.<a name="line.234"></a>
<span class="sourceLineNo">235</span>     *<a name="line.235"></a>
<span class="sourceLineNo">236</span>     * &lt;p&gt;<a name="line.236"></a>
<span class="sourceLineNo">237</span>     * If {@code tx} is not null and there is already an open transaction associated with this instance and they<a name="line.237"></a>
<span class="sourceLineNo">238</span>     * are not the same transaction, an {@link IllegalStateException} is thrown.<a name="line.238"></a>
<span class="sourceLineNo">239</span>     * &lt;/p&gt;<a name="line.239"></a>
<span class="sourceLineNo">240</span>     *<a name="line.240"></a>
<span class="sourceLineNo">241</span>     * @param tx transaction in which to perform the action, or null to create a new one (if necessary)<a name="line.241"></a>
<span class="sourceLineNo">242</span>     * @param action action to perform<a name="line.242"></a>
<span class="sourceLineNo">243</span>     * @return true if {@code action} completed successfully, false if the transaction could not be created<a name="line.243"></a>
<span class="sourceLineNo">244</span>     *  or {@code action} threw an exception<a name="line.244"></a>
<span class="sourceLineNo">245</span>     * @throws IllegalStateException if {@code tx} conflict with the already an open transaction associated with this instance<a name="line.245"></a>
<span class="sourceLineNo">246</span>     * @throws IllegalArgumentException if {@code action} is null<a name="line.246"></a>
<span class="sourceLineNo">247</span>     */<a name="line.247"></a>
<span class="sourceLineNo">248</span>    public boolean perform(Transaction tx, final Action action) {<a name="line.248"></a>
<span class="sourceLineNo">249</span>        return this.perform(tx, new Session.Action() {<a name="line.249"></a>
<span class="sourceLineNo">250</span>            @Override<a name="line.250"></a>
<span class="sourceLineNo">251</span>            public void run(Session session) throws Exception {<a name="line.251"></a>
<span class="sourceLineNo">252</span>                action.run((CliSession)session);<a name="line.252"></a>
<span class="sourceLineNo">253</span>            }<a name="line.253"></a>
<span class="sourceLineNo">254</span>        });<a name="line.254"></a>
<span class="sourceLineNo">255</span>    }<a name="line.255"></a>
<span class="sourceLineNo">256</span><a name="line.256"></a>
<span class="sourceLineNo">257</span>    /**<a name="line.257"></a>
<span class="sourceLineNo">258</span>     * Callback interface used by {@link CliSession#perform CliSession.perform()}.<a name="line.258"></a>
<span class="sourceLineNo">259</span>     */<a name="line.259"></a>
<span class="sourceLineNo">260</span>    public interface Action {<a name="line.260"></a>
<span class="sourceLineNo">261</span><a name="line.261"></a>
<span class="sourceLineNo">262</span>        /**<a name="line.262"></a>
<span class="sourceLineNo">263</span>         * Perform some action using the given {@link CliSession} while a transaction is open.<a name="line.263"></a>
<span class="sourceLineNo">264</span>         *<a name="line.264"></a>
<span class="sourceLineNo">265</span>         * @param session session with open transaction<a name="line.265"></a>
<span class="sourceLineNo">266</span>         * @throws Exception if an error occurs<a name="line.266"></a>
<span class="sourceLineNo">267</span>         */<a name="line.267"></a>
<span class="sourceLineNo">268</span>        void run(CliSession session) throws Exception;<a name="line.268"></a>
<span class="sourceLineNo">269</span>    }<a name="line.269"></a>
<span class="sourceLineNo">270</span>}<a name="line.270"></a>
<span class="sourceLineNo">271</span><a name="line.271"></a>




























































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